Question

question which of the following has 3 significant figures? select all that apply. select all that apply: 123 12.3 123000. 1.23×10^4

Explanation:

Step1: Recall significant - figure rules

Non - zero digits are always significant.

Step2: Analyze 123

All three non - zero digits are significant.

Step3: Analyze 12.3

The non - zero digits are significant, and there are three significant figures.

Step4: Analyze 123000.

The trailing zeros after a non - decimal number are significant when there is a decimal point. So, it has 6 significant figures.

Step5: Analyze 1.23×10⁴

In scientific notation, the digits in the coefficient (1.23) are significant. It has 3 significant figures.

Answer:

123, 12.3, 1.23×10⁴